Extensible HTML/XML generator, cross-platform templating language, Oracle utilities and various other tools
XIST provides an extensible HTML and XML generator. XIST is also a XML parser with a very simple and pythonesque tree API. Every XML element type corresponds to a Python class and these Python classes provide a conversion method to transform the XML tree (e.g. into HTML). XIST can be considered ‘object oriented XSLT’.
XIST also includes the following modules and packages:
- ll.make is an object oriented make replacement. Like make it allows you to specify dependencies between files and actions to be executed when files don’t exist or are out of date with respect to one of their sources. But unlike make you can do this in a object oriented way and targets are not only limited to files.
- ll.url provides classes for parsing and constructing RFC 2396 compliant URLs.
- ll.orasql provides utilities for working with cx_Oracle:
- It allows calling functions and procedures with keyword arguments.
- Query results will be put into Record objects, where database fields are accessible as object attributes.
- The Connection class provides methods for iterating through the database metadata.
- Importing the modules adds support for URLs with the scheme oracle to ll.url.
- ll.ul4c is compiler for a templating language with similar capabilities to Django’s templating language. UL4 templates are compiled to an internal bytecode format, which makes it possible to implement template renderers in other languages and makes the template code “secure” (i.e. template code can’t open or delete files).
- ll.astyle can be used for colored terminal output (via ANSI escape sequences).
- ll.color provides classes and functions for handling RGB color values. This includes the ability to convert between different color models (RGB, HSV, HLS) as well as to and from CSS format, and several functions for modifying and mixing colors.
- ll.misc provides several small utility functions and classes.
- ll.sisyphus provides classes for running Python scripts as cron jobs.
- ll.daemon can be used on UNIX to fork a daemon process.
- ll.xml_codec contains a complete codec for encoding and decoding XML.
- ll.nightshade can be used to serve the output of PL/SQL functions/procedures with CherryPy.
Changes in 3.16 (released 01/21/2011)
- The UL4 functions json, type, islist and isdict can now handle all instances of collections.Mapping and collections.Sequence not just tuple, list and dict.
- ll.sisyphus logging of exceptions and tracebacks should be more robust against encoding problems.
- The cssutils version has been bumped to 0.9.7.
- dtd2xsc.py can now combine the content of more than one DTD into a namespace. Handling of duplicate elements can be specified with a new duplicates option.
- xml2xsc.py can now collect the XML info from multiple XML files.
- Fixed a bug in the command line argument handling of dtd2xsc.py.
- dtd2xsc.py can now handle undefined entities.
- The help message for all scripts in XIST now show the default for all options.
- Replaced the function misc.flag with a class misc.FlagAction that can be used as the action in argparse.ArgumentParser.add_argument calls.
- Command line options for all scripts have been enhanced: Flags without a yes/no value now toggle the default (using the new misc.FlagAction).
- The script xml2xsc.py has a new option --defaultxmlns for setting a namespace name for elements without a namespace.
- ll.xist.xnd and the related scripts have seen some refactoring.
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